basic

Raoult's Law Calculator

Vapor pressure of an ideal solution.

Compute the partial vapor pressure of the solvent above an ideal solution from the mole fraction of the solvent and the pure-solvent vapor pressure, using P = X_solvent · P°_solvent.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

mmHg

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

P_solvent = X_solvent · P°_solvent

In depth

Compute the partial vapor pressure of the solvent above an ideal solution from the mole fraction of the solvent and the pure-solvent vapor pressure, using P = X_solvent · P°_solvent.